<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item to="/home">首页</el-breadcrumb-item>
      <el-breadcrumb-item >商品管理</el-breadcrumb-item>
      <el-breadcrumb-item >分类参数</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert type="warning" show-icon title="注意：只允许为第三级分类设置相关参数" :closable="false"></el-alert>
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类:</span>
          <el-cascader :options="cateList" :props="cateProps" @change="handleChange" expand-trigger="hover" v-model="selectedCateKeys" style="width: 300px;margin-left: 20px"></el-cascader>
        </el-col>
      </el-row>
      <el-row>
        <el-tabs v-model="activeName" @tab-click="handleTabClick">
          <el-tab-pane label="动态参数" name="many">
            <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
            <el-table :data="manyTableData" border stripe>
              <el-table-column type="expand">
                <template slot-scope="scope">
                  <el-tag v-for="(item, id) in scope.row.attr_vals" :key="id" closable @close="handleClose(id, scope.row)">{{item}}</el-tag>
                  <el-input
                    class="input-new-tag"
                    v-if="scope.row.inputVisible"
                    v-model="scope.row.inputValue"
                    ref="saveTagInput"
                    size="small"
                    @keyup.enter.native="handleInputConfirm(scope.row)"
                    @blur="handleInputConfirm(scope.row)"
                    style="width: 120px"
                  >
                  </el-input>
                  <el-button v-else size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                </template>
              </el-table-column>
              <el-table-column type="index"></el-table-column>
              <el-table-column label="参数名称" prop="attr_name"></el-table-column>
              <el-table-column label="操作">
                <template slot-scope="scope">
                  <el-button icon="el-icon-edit" type="primary" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                  <el-button icon="el-icon-edit" type="danger" size="mini" @click="removeParamsById(scope.row.attr_id)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>
          </el-tab-pane>
          <el-tab-pane label="静态属性" name="only">
            <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加属性</el-button>
            <el-table :data="onlyTableData" border stripe>
              <el-table-column type="expand">
                <template slot-scope="scope">
                  <el-tag v-for="(item, id) in scope.row.attr_vals" :key="id" closable @close="handleClose(id, scope.row)">{{item}}</el-tag>
                  <el-input
                    class="input-new-tag"
                    v-if="scope.row.inputVisible"
                    v-model="scope.row.inputValue"
                    ref="saveTagInput"
                    size="small"
                    @keyup.enter.native="handleInputConfirm(scope.row)"
                    @blur="handleInputConfirm(scope.row)"
                    style="width: 120px"
                  >
                  </el-input>
                  <el-button v-else size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                </template>
              </el-table-column>
              <el-table-column type="index"></el-table-column>
              <el-table-column label="属性名称" prop="attr_name"></el-table-column>
              <el-table-column label="操作">
                <template slot-scope="scope">
                  <el-button icon="el-icon-edit" type="primary" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                  <el-button icon="el-icon-edit" type="danger" size="mini" @click="removeParamsById(scope.row.attr_id)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>
          </el-tab-pane>
        </el-tabs>
      </el-row>
    </el-card>
<!--    添加参数和属性的对话框-->
    <el-dialog :title="'添加'+titleText" :visible.sync="addDialogVisible" width="50% " @close="addDialogClosed">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="addDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="addParams">确定</el-button>
      </span>
    </el-dialog>
<!--    添加参数和属性的对话框-->
    <el-dialog :title="'修改'+titleText" :visible.sync="editDialogVisible" width="50% " @close="eidtDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="editParams">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Params',
  data () {
    return {
      cateList: [],
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      selectedCateKeys: [],
      // 被激活的tab
      activeName: 'many',
      manyTableData: [],
      onlyTableData: [],
      addDialogVisible: false,
      editDialogVisible: false,
      addForm: {
        attr_name: ''
      },
      addFormRules: {
        attr_name: [
          {
            required: true, message: '请输入内容', trigger: 'blur'
          }
        ]
      },
      editForm: {
        attr_name: ''
      },
      editFormRules: {
        attr_name: [
          {
            required: true, message: '请输入内容', trigger: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    async getCateList () {
      const { data: result } = await this.$http.get('categories')
      if (result.meta.status !== 200) return this.$message.error('获取分类列表失败')
      this.cateList = result.data
    },
    async handleChange () {
      this.getParamsData()
    },
    handleTabClick () {
      this.getParamsData()
    },
    async getParamsData () {
      if (this.selectedCateKeys.length === 3) {
        const { data: result } = await this.$http.get('categories/' + this.cateId + '/attributes', {
          params: {
            sel: this.activeName
          }
        })
        if (result.meta.status !== 200) return this.$message.error('获取失败')
        console.log(result.data)
        result.data.forEach(item => {
          item.attr_vals = item.attr_vals.length ? item.attr_vals.split(',') : []
          item.inputVisible = false
          item.inputValue = ''
        })
        if (this.activeName === 'only') {
          this.onlyTableData = result.data
        } else if (this.activeName === 'many') {
          this.manyTableData = result.data
        }
      } else {
        this.selectedCateKeys = []
        this.onlyTableData = []
        this.manyTableData = []
      }
    },
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    eidtDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    addParams () {
      this.$refs.addFormRef.validate(async valid => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        const { data: result } = await this.$http.post('categories/' + this.cateId + '/attributes', {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        console.log(result)
        if (result.meta.status !== 201) return this.$message.error('添加失败')
        this.$message.success('添加成功')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    // 提交修改的数据
    editParams () {
      // 校验
      this.$refs.editFormRef.validate(async valid => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        const { data: result } = await this.$http.put('categories/' + this.cateId + '/attributes/' + this.editForm.attr_id, {
          attr_name: this.editForm.attr_name,
          attr_sel: this.activeName
        })
        if (result.meta.status !== 200) return this.$message.error('修改失败')
        this.$message.success('提交成功')
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    async showEditDialog (id) {
      const { data: result } = await this.$http.get('categories/' + this.cateId + '/attributes/' + id, {
        params: {
          attr_sel: this.activeName
        }
      })
      if (result.meta.status !== 200) return this.$message.error('查询失败')
      this.editForm = result.data
      this.editDialogVisible = true
    },
    async removeParamsById (id) {
      const result = await this.$confirm('此操作将永久删除该' + this.titleText, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (result !== 'confirm') {
        return this.$message.info('已取消')
      }
      const { data: res } = await this.$http.delete('categories/' + this.cateId + '/attributes/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除失败')
      this.$message.success('删除成功')
      this.getParamsData()
    },
    async handleInputConfirm (row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      if (row.attr_vals === '') {
        row.attr_vals = []
      }
      const { data: result } = await this.$http.put('categories/' + this.cateId + '/attributes/' + row.attr_id, {
        attr_name: row.attr_name,
        attr_sel: row.attr_sel,
        attr_vals: row.attr_vals.join(',')
      })
      if (result.meta.status !== 200) return this.$message.error('添加失败')
      row.attr_vals.push(row.inputValue.trim())
      this.$message.success('添加成功')
      row.inputValue = ''
      row.inputVisible = false
    },
    showInput (row) {
      row.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    async handleClose (id, row) {
      // if (row.attr_vals.length === 1) return this.$message.error('至少保留一个tag')
      row.attr_vals.splice(id, 1)
      if (row.attr_vals.length === 0) {
        row.attr_vals = ''
      }
      const { data: result } = await this.$http.put('categories/' + this.cateId + '/attributes/' + row.attr_id, {
        attr_name: row.attr_name,
        attr_sel: row.attr_sel,
        attr_vals: row.attr_vals
      })
      if (result.meta.status !== 200) return this.$message.error('删除失败')
      this.$message.success('删除成功')
      row.inputValue = ''
      row.inputVisible = false
    }
  },
  computed: {
    isBtnDisabled () {
      return this.selectedCateKeys.length !== 3
    },
    cateId () {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    titleText () {
      if (this.activeName === 'many') {
        return '动态参数'
      } else {
        return '静态属性'
      }
    }
  },
  created () {
    this.getCateList()
    console.log(this.selectedCateKeys)
  }
}
</script>

<style scoped>
.cat_opt{
  margin: 15px;
}
.el-tag{
  margin: 10px
}
</style>
